diff --git a/wagtail/tests/models.py b/wagtail/tests/models.py
index bbf91d278..5598e88f8 100644
--- a/wagtail/tests/models.py
+++ b/wagtail/tests/models.py
@@ -255,18 +255,21 @@ FormPage.content_panels = [
 ]
 
 
+# Snippets
+
 # Snippets
 
 class Advert(models.Model):
-  url = models.URLField(null=True, blank=True)
-  text = models.CharField(max_length=255)
+    url = models.URLField(null=True, blank=True)
+    text = models.CharField(max_length=255)
 
-  panels = [
-    FieldPanel('url'),
-    FieldPanel('text'),
-  ]
+    panels = [
+        FieldPanel('url'),
+        FieldPanel('text'),
+    ]
+
+    def __unicode__(self):
+        return self.text
 
-  def __unicode__(self):
-    return self.text
 
 register_snippet(Advert)